The answer is that the bucket ACL allows public read access, overriding the bucket policy Deny. This occurs because S3 evaluates both bucket policies and bucket ACLs as separate authorization layers, and an ACL granting public read access effectively bypasses the Deny statement in the policy when the policy’s Deny condition is misapplied. In this scenario, the Deny statement uses a NotIpAddress condition, which only denies access to IPs that are not in the specified range—but if the bucket ACL already allows everyone (AllUsers) to read objects, that ACL-based Allow takes effect for all IPs, including those outside the range, because S3 grants access if any applicable policy or ACL allows it unless a matching explicit Deny exists. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this tests your understanding of how S3’s authorization model combines bucket policies and ACLs, a common trap where candidates assume a Deny in the policy alone blocks all unintended access. Remember: ACLs are legacy but still evaluated, so always check both layers when a Deny seems ignored.
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Refer to the exhibit. A SysOps administrator has attached the bucket policy shown to an S3 bucket. Users from the IP range 192.0.2.0/24 report that they can access objects, but users from other IP ranges also report they can access objects. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The bucket ACL allows public read access, overriding the bucket policy Deny.
The Deny statement uses NotIpAddress condition, which denies access unless the source IP is not in the specified range. However, the Allow statement allows access from the specified IP range. But the Deny statement as written denies all actions (including GetObject) if the IP is NOT in the range. This should block all other IPs. The issue might be that the bucket policy has an explicit deny, but if the bucket is also configured with a bucket ACL that allows public access, the effective permissions may be confusing. However, the most common mistake is that the Deny statement is missing the effect on the same action? Actually, the Deny statement will override any Allow for IPs not in the range. The only scenario where other IPs can access is if the bucket policy is not the only authorization method, or if there is a separate bucket ACL that allows access. But given the options, the most plausible is that the bucket ACL allows public read access. Option A is plausible because bucket ACLs can grant access to everyone. Option B is not shown. Option D is not shown.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The bucket is not configured to use the bucket policy.
Why it's wrong here
Bucket policies are always evaluated if present.
✗
The bucket policy is malformed and is not being applied.
Why it's wrong here
The policy is syntactically correct.
✗
The Condition element in the Allow statement is incorrectly formatted.
Why it's wrong here
The condition is correctly formatted.
✓
The bucket ACL allows public read access, overriding the bucket policy Deny.
Why this is correct
Bucket ACLs are evaluated before bucket policies, and if an ACL grants access, it can override a Deny in the policy.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SOA-C02 questions on access control and AAA configuration.
Networking and Content Delivery — This question tests Networking and Content Delivery — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: The bucket ACL allows public read access, overriding the bucket policy Deny. — The Deny statement uses NotIpAddress condition, which denies access unless the source IP is not in the specified range. However, the Allow statement allows access from the specified IP range. But the Deny statement as written denies all actions (including GetObject) if the IP is NOT in the range. This should block all other IPs. The issue might be that the bucket policy has an explicit deny, but if the bucket is also configured with a bucket ACL that allows public access, the effective permissions may be confusing. However, the most common mistake is that the Deny statement is missing the effect on the same action? Actually, the Deny statement will override any Allow for IPs not in the range. The only scenario where other IPs can access is if the bucket policy is not the only authorization method, or if there is a separate bucket ACL that allows access. But given the options, the most plausible is that the bucket ACL allows public read access. Option A is plausible because bucket ACLs can grant access to everyone. Option B is not shown. Option D is not shown.
What should I do if I get this SOA-C02 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SOA-C02 questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This SOA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SOA-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.